Date: Mon, 17 Dec 2018 00:36:53 +0000 From: Kaya Saman <kayasaman@gmail.com> To: "freebsd-fs@freebsd.org >> freebsd-fs" <freebsd-fs@freebsd.org> Subject: Re: Upgrade to 12-Release system not booting kernel panic Message-ID: <bf7e5dd6-f521-ba9f-590e-253dd04b107e@gmail.com> In-Reply-To: <CANCZdfqVYEpuPjvF3UvoOkAN09U8f%2BbB75dd9xqt__FJ_7zYHg@mail.gmail.com> References: <4a9526c1-2c46-eebe-b92d-d10e522d8941@gmail.com> <CANCZdfqVYEpuPjvF3UvoOkAN09U8f%2BbB75dd9xqt__FJ_7zYHg@mail.gmail.com>
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On 12/17/18 12:01 AM, Warner Losh wrote: > Did you get a FreeBSD copyright notice before the crash? I don't recall as the screen went so fast. One thing I can say is that I managed to get the system up! :-) <- though I don't think it is stable :-( Basically it seems the kernel panic was from a setting(s) in /boot/loader.conf Using the installer img usb image in Live mode I commented out most of the modifications in there. I then proceeded to remove all my mechanical drives and left only the ssd's, then import the zroot and create a new cache file. After that the system managed to boot and I was able to continue with the upgrade. To get the pools back I installed the drives while operational (hot swap) and then did a zpool import on them. ....So far the system is up and functioning though after rebuilding @ports I need to reboot again to finish up the upgrade. This is something I am not too confident about doing as I do not wish to remove all my drives again then re-import the pools. Regards, Kaya > > Warner > > On Sun, Dec 16, 2018, 8:45 AM Kaya Saman <kayasaman@gmail.com > <mailto:kayasaman@gmail.com> wrote: > > Hi, > > > I've been digging around a little on this one and it seems that > there is > some ZFS wierdness going on. > > > My original install was an 11.2-RELEASE fresh install and upon an > upgrade to 12-RELEASE the system is having issues booting. > > > I have a ZFS root pool called zroot; by default this mounts at > zroot/ROOT/default and a few other non-root / bootable ZFS pools. > > > The system is a SuperMicro SC216 chassis with LSI non-RAID HBA. > > > I have the boot disks ada0 and ada1 plugged into the rear of the > chassis > and directly into the systemboard which is also a SuperMicro. These > drives are both Samsung SSD's. > > The 22 drive slots at the front of the chassis are occupied by the > other > various data pools. > > > So here is some strangeness... if I remove all 22 drives from the > front, > the system boots fine but straight after boot goes into kernel panic > mode and reboots before I can even look at the error or get to the > login > prompt. > > > With the non-root pools installed at the BTX loader after scanning > through all the bios drives I get a bunch of: > > read 264 from ... to 0x...., error 0x10 errors > > then: > > ZFS: i/o error - all block copies unavailable > > ZFS: can't read MOS of pool <non-root-pool-names> > > > after this the system simply hangs? > > > I have tried looking around but everything mentioning the MOS > error is > talking about the root pool, a particularly good reference is here: > http://freebsd.1045724.x6.nabble.com/ZFS-i-o-error-in-recent-12-0-td6245865.html > > > In fact I did try to boot with a USB stick and go into Live mode then > import all the pools on the system. This works without any issue! The > pools are fine the data is there everything looks normal. > > - I also rebuilt the zpool.cache according to the link just incase > there > was some kind of corruption there, however upon reboot I still get > the > same issue?? > > > Looking at a bug report with a kernel panic: > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220923#c17 > > > I have attempted to add: > > > kern.cam.scsi_delay="50000" > > kern.cam.boot_delay="50000" > > > into the /boot/loader.conf file but unfortunately the issue still > continues :-( > > > I wonder if there is a way to tell to tell the system to only look at > certain drives for booting?? > > > There is this line in my loader.conf: > > vfs.root.mountfrom="zfs:zroot" > > > It maybe the wrong hunch I have but it seems like the system is > looking > for "zroot" on all pools instead of the actual root pool hence the > above > errors?? > > > Would anyone be able to suggest anything or have any ideas about > how to > get the system back online and booting?? > > > Thanks. > > > Kaya > > _______________________________________________ > freebsd-fs@freebsd.org <mailto:freebsd-fs@freebsd.org> mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to > "freebsd-fs-unsubscribe@freebsd.org > <mailto:freebsd-fs-unsubscribe@freebsd.org>" >
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